Welcome to JENT its Friday 19th of January 2018

Journal of Environmental Nanotechnology

(A Quarterly Peer-reviewed and Refereed International Journal)
ISSN(Print):2279-07 48; ISSN(Online):2319-5541
CODEN:JENOE2

Removal of Trihalomethans in Tehran Drinking Water by an Advanced Oxidation Process

Abstract

Due to growing population and increasing contamination of surface and ground water, it is necessary to protect public health by drinking water disinfected with chlorine, the most common method of disinfection. Despite enormous benefits of the chlorination method, there are also disadvantages to human health. Disinfection by-products cause a variety of diseases like cancers in humans. The main group of these by-products is THMs. Different methods such as Adsorption, Air Stripping Packed-Column, Nano-filtration, and Granular Activated Carbon have been applied to eliminate THMs from water resources. In this study, Advanced Oxidation Process (AOP) method is used to reduce the contamination of THMs in Tehran drinking water. EPA method 551/1 was used for quantitating the analysis of trihalomethane compounds applying a gas chromatography equipped with an ECD detector. AOP method was performed in a photoreactor equipped with 4 UV lamps. The effects of UV radiation, concentration of hydrogen peroxide, and amount of ZnO nanocatalyst on oxidation reaction of THMs have been investigated. Results show that an optimum amount of hydrogen peroxide with and without applying the catalyst was 5 mL of concentrated solution (30%), and the optimum amount of catalyst with this amount of hydrogen peroxide was 0/5 g in 100 ml of drinking water samples with constant reaction time (1hr) and UV irradiation. The yield of THMs removal reaction in these conditions has been determined 91.78 %. One of the most important superiority of this method, in comparison with other THMS removing methods, is the reduction of THMs contamination of drinking water in trace amounts.

Article Type: Research Article

Corresponding Author:

This article has not yet been cited.

K.Tahvildari 1,  Nilufar Alavi  2.  

1, 2. Department of Physics, Sri Sarada College for women (Autonomous), Salem, TN, India

J. Environ. Nanotechnol. Volume 3, No.3 pp. 49-54
ISSN: 2279-0748 eISSN: 2319-5541
ENT 143094.pdf
Download Citation

Reference

REFRENCES Hodgeson, J. W., Cohen, A. L. and Collins, J. P., Analytical Methods for Measuring Organic Chlorination Byproducts, Proceedings Water Quality Technology Conference (WQTC-16), St. Louis, MO, Nov. 13-17, AmericanWater Works Association, Denver, CO, 981-1001(1988).

Calderon, R. L., The Epidemiology of Chemical Contaminants of Drinking Water. Food and Chemical Toxicology, 38, 13-20 (2000).

doi:10.1016/S0278-6915(99)00133-7

Gordon, Gilbert, William J. Cooper, Rip G. Rice, and Gilbert E., Pacey Disinfectant residual measurement methods. AWWA Research Foundation, American Water Works Association (1987).

Morris J. C., Health perspective in the oxidative treatment of water for potable supply. Part 2 Health assessment of current oxidant-disinfectants. National Institute for Water Supply. Leidschendam, Netherlands. Canada Health and Welfare (1993)

 Water treatment principles and applications. Canadian water and wastewater association, Ottawa. Bull R. J. and Kopfler F. C. (1991)

Formation and occurrence of disinfectant by-products. In Health Effects of Disinfectants and Disinfection by-Products, Denver, CO, American Water Works Association Research Foundation, 55–103(1982).

Ellis K. V., Environ. Control, 20, 341–407(1991). Dorfman L. M. and Adams G. E., Reactivity of the Hydroxyl Radical, National Bureau of Standards, Report No. NSRDS-NBS-46, (1973).

Oppenländer, T., "Photochemical purification of water and air". Wiley Inter Science, (2002).

doi:10.1002/9783527610884

Reckhow, D., Control of disinfection by-product formation using ozone. Formation and Control of Disinfection By-Products in Drinking Water. American Water Works Association, 179–203(1999).

>>